The 19th-century concept of Manifest Destiny was primarily used to justify which of the following actions by the United States?

The correct answer to the question "The 19th-century concept of Manifest Destiny was primarily used to justify which of the following actions by the United States?" is Option C: Territorial expansion across the North American continent..

The other options — A) The abolition of slavery in all states., B) The establishment of protective tariffs on imported goods., D) The creation of a national banking system. — are incorrect for this GED Exam Prep question. As explained above: Manifest Destiny was the belief that the United States was destined by God to expand its dominion and spread democracy across the North American continent, justifying westward expansion and territori…